MakeItFrom.com
Menu (ESC)

EN 1.7221 Steel vs. EN 1.4621 Stainless Steel

Both EN 1.7221 steel and EN 1.4621 stainless steel are iron alloys. They have 79% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is EN 1.7221 steel and the bottom bar is EN 1.4621 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11 to 17
25
Fatigue Strength, MPa 290 to 390
190
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 73
78
Tensile Strength: Ultimate (UTS), MPa 650 to 780
500
Tensile Strength: Yield (Proof), MPa 430 to 630
270

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 420
970
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1420
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 44
21
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
2.6
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
3.1

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
14
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.5
2.8
Embodied Energy, MJ/kg 20
41
Embodied Water, L/kg 51
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 83 to 98
110
Resilience: Unit (Modulus of Resilience), kJ/m3 490 to 1050
190
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 23 to 27
18
Strength to Weight: Bending, points 21 to 24
18
Thermal Diffusivity, mm2/s 12
5.7
Thermal Shock Resistance, points 19 to 23
17

Alloy Composition

Carbon (C), % 0.22 to 0.29
0 to 0.030
Chromium (Cr), % 0.8 to 1.2
20 to 21.5
Copper (Cu), % 0
0.1 to 1.0
Iron (Fe), % 96.8 to 98.3
74.4 to 79.7
Manganese (Mn), % 0.5 to 0.8
0 to 1.0
Molybdenum (Mo), % 0.15 to 0.3
0
Niobium (Nb), % 0
0.2 to 1.0
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.6
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015

Comparable Variants